EP0653039B1 - Optisches system mit einem toroidförmigen konkaven reflektor zum konzentrieren und sammeln von licht. - Google Patents

Optisches system mit einem toroidförmigen konkaven reflektor zum konzentrieren und sammeln von licht. Download PDF

Info

Publication number
EP0653039B1
EP0653039B1 EP93918480A EP93918480A EP0653039B1 EP 0653039 B1 EP0653039 B1 EP 0653039B1 EP 93918480 A EP93918480 A EP 93918480A EP 93918480 A EP93918480 A EP 93918480A EP 0653039 B1 EP0653039 B1 EP 0653039B1
Authority
EP
European Patent Office
Prior art keywords
reflector
target
source
optical
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93918480A
Other languages
English (en)
French (fr)
Other versions
EP0653039A4 (de
EP0653039A1 (de
Inventor
Glenn Baker
Karlheinz Strobl
Douglas C/O Cogent Light Techn. Inc. Brenner
Robert Fischer
Robert Piccioni
Michael Thomas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cogent Light Technologues Inc
Original Assignee
Cogent Light Technologues Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cogent Light Technologues Inc filed Critical Cogent Light Technologues Inc
Publication of EP0653039A1 publication Critical patent/EP0653039A1/de
Publication of EP0653039A4 publication Critical patent/EP0653039A4/de
Application granted granted Critical
Publication of EP0653039B1 publication Critical patent/EP0653039B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/0006—Coupling light into the fibre

Definitions

  • This invention relates to systems for collecting and condensing electromagnetic radiation, particularly a system for providing a high radiance to a small target such as an optical fiber.
  • Condenser lenses have several problems which include creation of chromatic and spherical aberrations, relatively high cost, inherently difficult alignment, and large amount of space.
  • Ellipsoidal reflectors as shown in Figure 2 are also used in prior art systems. Their problems also include high cost and an unavoidable magnification of the image (i.e., a reduction in the flux density ⁇ . Both of these systems tend to emphasize redirection of the maximum amount of flux from a point source at the expense of the flux density, as discussed above.
  • the present invention represents an improvement over the system disclosed in U.S. Patent No. 4,757,431 in three ways: (i) it enhances the concentration and collection of radiation emitted by a point-like source of electromagnetic radiation into a small target; (ii) it increases the collectable flux into a small target, and (iii) it improves the collection and coupling efficiency between a source of electromagnetic radiation and a small target for any "off-axis optical system" as described in U.S. Patent No. 4,757,431, particularly in the reduction of the preferred embodiment into practical systems.
  • the present invention employs as the primary optical element a concave reflecting surface having different radii of curvature along two orthogonal axes (i.e., a toroidal reflector), a source of electromagnetic radiation and a target (i.e., an optical fiber).
  • the source and target are located at similar distances on opposite sides of the optical axis of the system which is defined as the optical axis of the concave toroidal reflector (the "off-axis reflector").
  • a retro-reflector preferably of toroidal design or alternatively of spherical design, is located behind the source to reflect and re-focus radiation from and back through the source onto the toroidal reflector.
  • the retro-reflector together with the off-axis toroidal reflector act as a system for maximizing the collectable flux density of radiation concentrated at the target.
  • the system substantially improves the collectable radiance at the target in two ways: (i) the toroidal design of the reflectors substantially corrects for astigmatism caused both by the off-axis geometry and glass-envelope of typical electromagnetic radiation sources such as an arc lamp and (ii) the retro reflector increases the effective brightness of the radiation source.
  • the maximum optical efficiency of the system is obtained by optically matching the reflector and target, while the maximum flux density at the target and, in particular, collectable by an optical fiber as the target, is obtained both by maximizing the system efficiency and optically matching the source, reflector, and target.
  • prior art teaches the use of ellipsoidal reflectors "on-axis" or deformable spherical concave reflectors "off-axis,” in practice the use of aspheric mirrors is expensive.
  • a significant advantage of the present system is the use of very inexpensive aspheric mirrors, toroids, to concentrate light at a target in which the collectable flux density at the target is insensitive to the surface quality of the mirror.
  • Figure 1 is a schematic illustration of a prior art condenser lens system.
  • Figure 2 is a schematic illustration of a prior art ellipsoidal lens system.
  • Figure 3a is a schematic illustration in the x-z plane of a prior art system employing 8 spherical reflector.
  • Figure 3b is a schematic illustration in the y-z plane of a prior art system employing a spherical reflector.
  • Figure 4a is a schematic illustration in the x-z plane of the present invention.
  • Figure 4b is a schematic illustration in the y-z plane of the present invention.
  • Figure 5 is a coordinate system of the embodiment of the present invention.
  • Figure 6a is a ray diagram illustrating the optimum image locations for a concave spherical reflector to maximize the concentration and collection of radiation at a target.
  • Figure 6b is a ray diagram illustrating the optimum image locations for a concave toroidal reflector to maximize the concentration and collection of radiation at a target. Note that the result of having two radii of curvature to compensate for optical aberrations nearly collapses I 1 and I 2 in a theoretical sense into the circle of least confusion. In a practical sense, I 1 and I 2 are at the circle of least confusion (see Figure 6a) and the size of the image at the circle of least confusion is larger than that of the source depending on the extent to which the toroidal design is optimized.
  • Figure 7a is a schematic illustration of the optical configuration of Figure 3a expanded to include two off-axis and two secondary retro-reflectors.
  • Figure 7b reduces the two secondary retro-reflectors of Figure 5a to a single nearly hemispherical reflector having two radii of curvature in orthogonal planes unequal (toroidal) or equal (spherical) depending on the source.
  • Figure 8 is a schematic illustration of the optical configuration in which the reflectors and source are assembled and substantially fabricated as one self contained unit.
  • Figure 9 is an extension of the invention to include four targets coupled to the electromagnetic radiation source by four off-axis toroidal reflectors.
  • a condensing, collecting, and concentrating optical system built in accordance with this invention consists of three main components ( Figure 4).
  • the fourth, a retro-reflector, is optional, but improves performance.
  • Figures 4a & 4b illustrate an idealized concentrating and collecting system according to the present invention.
  • a source S O and target T On opposite sides of the optical axis O of the system are a source S O and target T each displaced a distance y O from the optical axis, defined by the center of curvature and optical axis of toroidal reflector M 1 (off-axis reflector).
  • the optical axis of a toroidal reflector is defined as the normal to the perpendicular intersection of the radii of curvature.
  • a retro-reflector M 2 is located behind the source S O with the source at a distance approximately equal to its radius of curvature.
  • the preferred embodiment includes this retro-reflector for maximal concentration of radiant flux density, it is not essential for condensing, concentrating, and collecting radiation at the target.
  • the off-axis displacement, y O is equal for a source S O and target T.
  • the off-axis displacement of the source may be different from that of the target.
  • the effective optical axis of the system will lie between the target and the source and may be different from the optical axis of the reflector. The exact location of effective system optical axis in this case will depend on the numerical aperture of the target and the effective numerical aperture of the reflector.
  • the optical axis of the off-axis reflector is not an exact description of the system optical axis, the effective optical axis of the system is determined from a proper matching of the numerical aperture of the source to the effective numerical aperture of the reflector and the numerical aperture of the target.
  • the effective numerical aperture of the reflector will differ from the theoretical numerical aperture if that portion of the reflector actually used to condense and concentrate light within the acceptance angle of the target is smaller than the full aperture, A 1 , in Figure 4.
  • the effective numerical aperture of the reflector will be less than its theoretical numerical aperture.
  • the above-cited patent teaches (i) that the source relative to the spherical concave mirror should be placed at a distance along the z axis equal to the radius of curvature of the mirror and a distance, y O , off-axis, such that (y O 2 )/r ⁇ S O and (ii) that the optimum location for a target is then the image point defined as the circle of least confusion, further analysis reveals that positioning the target at this location is not necessarily optimum as defined in U.S. Patent No. 4,757,431. Its exact location depends on the characteristics of the source, of the reflectors, and/or of the transmissive optic(s) placed between the target and the source.
  • the present invention is an optical system that increases and enhances the concentration and collection of radiant flux at a target. It also increases and enhances the degree of illumination of the target.
  • the fiber may act as an active element that randomizes and scrambles transmitted radiant flux thereby eliminating optical aberrations and optical memory.
  • Figure 5 further illustrates the coordinate system of one embodiment of the present invention.
  • the location of maximum collectable flux for a given target is defined as the location of maximum flux density for the specific set of components of the system and may or may not coincide with the location of maximum total flux density, total flux, or image point (circle of least confusion).
  • the present invention provides an optical imaging system of increased radiant flux density compared to what is achievable with prior art. Nevertheless, this system may not be optimized to provide the maximum theoretical collection efficiency.
  • the optimum location for the placement of a target in the present invention will depend on the characteristics of the target and can be classified as follows.
  • Case 1 For targets placed at the image point (circle of least confusion) which are of similar size to or larger than that of the source, the system has approximately unit magnification. In this case the system is typically optimized if a fiber optic target has a numerical aperture equal to or larger than that of the off-axis mirror.
  • Case 2 For targets smaller than the source or for fiber optic targets having a smaller numerical aperture than that of the off-axis mirror of case 1, there exist toroids specific for a given source and a target that optimize the collectable flux density at the target which may be different than case 1. Hence, for a target described by case 2, there is a corresponding optimized toroid for a given source.
  • Case 3 For practical systems involving a given source and a toroidal reflector optimized for a target of specified characteristics (e.g., diameter, shape, numerical aperture for a fiber optic target as discussed in cases 1 and 2), use of such an optimized system with targets having sizes or numerical apertures other than those of the optimized target may require different positioning of the target and the reflector relative to the source.
  • the system deviates from unit magnification in that the toroidal reflector typically must be translated along the z-axis and positioned relative to the source at a distance so as to optimize the positioning of that portion of the reflector-surface which concentrates the maximum flux density within the angle of acceptance of the target.
  • the location of the target may differ substantially and the effective numerical aperture of the reflector is matched to the numerical aperture of the target.
  • the effective optical axis of the system may also differ from the idealized geometry of Figure 4.
  • case 3 there may exist a locus of points having similar collectable flux densities for a given target depending on the characteristics of the source.
  • that portion of the intensity contour collectable by a fiber optic target will vary with target size and with numerical aperture of both target and off-axis mirror.
  • that portion of the source actually imaged or collected at the target varies.
  • the system is said to concentrate rather than image flux density from the source at the target.
  • the size of the target will always be smaller than that of the source and the source will have an intensity contour that will vary over its nominal size.
  • the degradation of the radiant flux of the source at the focal point, image point, or location of the target is primarily caused by astigmatism produced in the y-direction by the off-axis geometry.
  • astigmatism is caused by the aspherical shape of the glass envelope itself.
  • the deficiency of the spherical reflector is that the projection of the rays onto the y-z plane converge closer to the reflector than do the projection of the rays onto the x-z plane.
  • the current invention improves on the teachings of this patent in the substitution of a toroidal surface having its longer radius of curvature along the y-axis and shorter radius of curvature along the x-axis.
  • the difference in radii causes the convergence of rays in the y-z plane to be repositioned to coincide with that in the x-z plane.
  • This substitution reduces the size of the focal point by reducing the total system astigmatism, thereby both increasing the concentrating power of the optical system and enhancing the collectable radiant flux at the target.
  • a toroidal reflector substantially reduces the size of the image.
  • a toroidal reflector can increase the maximum collectable flux by greater than 40%.
  • a toroidal over a spherical reflector is its adaptability in reducing and compensating for aberrations in off-axis geometries when non-ideal point sources (e.g., extended sources with aspherical glass envelopes) are used.
  • non-ideal point sources e.g., extended sources with aspherical glass envelopes
  • This rotation adjusts the effective focal lengths defined by the radii of curvature along the x-z and y-z planes and thereby concentrates the radiation flux density to a maximum extent.
  • rotation of the toroidal reflector optimizes the flux density at the target by adjusting the radii of curvature to compensate for the particular aberrations in the system.
  • a practical improvement of the current invention over the previously cited patent is the capability to optimize the flux density at the target for targets of varying size. Whereas larger targets of similar dimensions to the source are positioned for maximum flux at or near the circle of least confusion, as defined in U.S. Patent No. 4,757,431, smaller targets may not be.
  • substantial differences in the location of the fiber occur depending on fiber diameter and NA.
  • the fiber-diameter (1-mm) is similar in size to the size of source and its NA matches that of the reflector, the fiber is located near the circle of least confusion as defined by the teachings of U.S. Patent No. 4,757,431, whereas when the NA is substantially smaller, its location for maximum collectable flux density can vary by 0.5 mm.
  • the locations of each for which flux density is maximized differ by 1.5 mm, because the image points of maximum brightness depend on the angular distribution of flux density which must be optimized for numerical aperture at the target relative to both the NA of the reflector and the brightness of the source.
  • U.S. Patent No. 4,757,431 teaches that the collecting and condensing system is NA independent.
  • the present off-axis collection system requires that the NA's of the fiber optic target(s) and off-axis reflector(s) be matched or optimized to achieve maximum collectable flux density.
  • the reflector must have a NA that is greater than that of the target to achieve maximum collectable flux by a fiber target.
  • high NA targets and reflectors provide for maximum optical and collection efficiency resulting in maximum concentration of flux density at the target.
  • An optimized system involves matching the characteristics of the source to those of both the off-axis reflector and the target.
  • the source (S O ) and target (T) are located at focal points equi-distant and on opposite sides of the optical axis of toroidal reflector M 1 , also defined as the system optical axis.
  • the y-z plane is said to contain the source, target and optical axis.
  • an x-axis is said to be parallel to the longitudinal axis of the source, defined by the electrodes of the arc gap.
  • the y-z plane containing the optical axis may or may not coincide with the plane containing the arc and fiber optic target.
  • the collectable flux and system efficiency may be increased by 5-10% by tilting the plane of the optical axis ⁇ a 5° and/or g a 5° to achieve optical matching of an arc lamp source and fiber characteristics or to locate the target above or below the y-z plane.
  • a more nearly ideal reduction of the present invention to practice requires construction of a source, such as an electric arc lamp, that houses both the off-axis mirror and retro-reflector in the same enclosure as that containing the source.
  • the fiber optic target may be placed either internal or external to the enclosure. When it is internal, the fiber is mounted permanently as a part of the fully enclosed assembly of source, off-axis mirror, and retro-reflector. When it is external, either a window placed near the optimal location of a fiber optic target ( Figure 8) or a fiber optic coupling mechanism is used to couple the focused image of the source to the fiber optic target.
  • the performance of such 8 device will depend on whether the off-axis mirrors are toroidal or spherical and the extent to which the configuration is displaced off-axis.
  • spherical and toroidal reflectors For the case in which the off-axis displacement is minimized, the performance of spherical and toroidal reflectors will be similar.
  • This construction eliminates aberrations that are inherent in aspheric glass envelopes associated with short arc gap lamps, and, therefore, spherical, on-axis retro-reflectors will perform as well as toroidal designs.
  • Arc lamps constructed without aspheric glass envelopes, such as those constructed with ceramic enclosures and a window(s) are able to avoid envelope-induced aberrations and to simulate near ideal conditions without enclosing the source and optics in a single enclosure.
  • U.S. Patent No. 4,757,431 teaches that the use of a spherical reflector imposes the restriction that y O 2 /r ⁇ S O .
  • This restriction limits the physical design of the system by requiring that the target be placed, in practice, at the minimum off-axis distance which is adjacent to the envelope.
  • the radii (r 1X & r 1y ) of the toroidal reflector can be chosen such that this restriction on the value of y O 2 /r is considerably relaxed. This allows for additional space between the source/source envelope and the target.
  • the additional space eliminates potential obstruction of the focal point by the envelope and permits the placement of optical elements (e.g., filter, correcting tilt plate, lens, etc.) or mechanical elements (e.g., shutter, iris, etc.) to attenuate, control, and/or filter the radiant flux density incident on the target.
  • optical elements e.g., filter, correcting tilt plate, lens, etc.
  • mechanical elements e.g., shutter, iris, etc.
  • a larger lamp envelope allows the arc lamp to be operated at a higher wattage, thereby increasing the collectable flux.
  • a higher wattage lamp with a 40 mm diameter envelope could be used.
  • the basic optical configuration described herein can be expanded to include a second concave reflector M 2 (i.e. retro-reflector).
  • This retro-reflector is located behind the source to reflect and re-focus flux from and back through the source onto the toroidal reflector.
  • the concave reflector can be either spherical or toroidal.
  • the improvement in the collectable flux in using such a concave retro-reflector depends on the characteristics of the source, source envelope, off-axis toroid reflector, and target and varies from 10% to 75%.
  • the retro-reflector should be optically matched to the source and its glass envelope (if present) as well as to the toroidal reflector and target to produce a system that maximizes both collectable radiation flux and system efficiency.
  • Toroidal designs are superior for sources having glass envelopes (enclosures) because they facilitate the reduction of astigmatism caused by the aspheric envelope. Correction of this astigmatism can produce improvements in total collected radiation flux by 20% over a spherical retro-reflector.
  • a self-contained system as shown schematically in Figure 8 could be optimized with either a spherical or toroidal retro-reflector depending on the target.
  • the optical configuration described herein can be expanded to include multiple off-axis reflectors (as are discussed in the previously cited U.S. Patent 4,757,431) multiple retro-reflectors and multiple targets.
  • the optical system of Figure 4, without retro-reflector M 2 could accommodate a total of four off-axis reflectors and four targets.
  • Inclusion of the second reflector M 2 reduces the system to two off-axis reflectors and two targets as shown in Figure 7.
  • Figure 8 shows the reduction of reflectors M 2 in Figure 7 to a single nearly hemispherical retro-reflector. In the case of four off-axis reflectors, each reflector would collect electromagnetic radiation from the source over a 90° solid angle.
  • each reflector would collect over a 90° solid angle from the source, and a pair of reflectors M 2 or the single retro-reflector of Figure 9 would focus light back through the source over a 90° or a 180° solid angle respectively.
  • Figure 8 shows the reduction of the optical configuration in Figure 4 in which the two reflectors and sources are assembled and substantially fabricated as one self-contained unit.
  • any combination of off-axis mirrors and retro-reflectors with a means to couple a target to the concentrated flux density either through a window or fiber optic fitting could be fabricated as one self-contained unit.
  • the number of off-axis mirrors could be increased beyond 4 for applications requiring more than 4 targets, in practice such an optical system would not maximize the collectable flux density at the target.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Lenses (AREA)
  • Microscoopes, Condenser (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Couplings Of Light Guides (AREA)

Claims (42)

  1. System zum Kondensieren, Konzentrieren und Sammeln elektromagnetischer Strahlung zur Bildung einer Beleuchtungsquelle mit hoher Intensität, die in einem kleinen Gebiet einen höchstmöglichen Strahlungsfluß hat, mit:
    einem primären Reflektor (M1) für elektromagnetische Strahlung, der eine optische Achse (O) und eine im wesentlichen toroidförmige Reflexionsfläche hat, die zu der Quelle (s) elektromagnetischer Strahlung konkav ist,
    wobei die Quelle (s) der elektromagnetischen Strahlung in der Nähe eines Krümmungsmittelpunktes des Reflektors (M1), jedoch um einen ersten Abstand (y0) seitlich versetzt von der optischen Achse (O) dieses Reflektors (M1) angeordnet ist, um ein im wesentlichen fokussiertes Bild der Quelle nach Reflexion an dem Reflektor (M1) an einem Punkt zu bilden, der zu der optischen Achse (O) um einen zweiten Abstand seitlich versetzt ist, wobei der im wesentlichen fokussierte Bildpunkt der Quelle (s) in Bezug auf die optische Achse (O) des Reflektors (M1) gegenüber liegt, und
    einem Target (T), das in der Nähe des im wesentlichen fokussierten Bildpunktes des Reflektors (M1) angeordnet ist, um die elektromagnetische Strahlung zu sammeln,
    dadurch gekennzeichnet, daß der primären Reflektor (M1) eine numerische Aperatur hat und die toroidförmige Reflexionsfläche zwei ungleiche Krümmungsradien hat und
    das Target (T) eine numerische Aperatur hat, die kleiner ist als die numerische Aperatur des Reflektors (M1).
  2. System nach Anspruch 1, bei dem die toroidförmige Reflexionsfläche in einer ersten Ebene, die die optische Achse (O), die Quelle (s) und das Target (T) enthält, einen Krümmungsradius hat, der größer ist als ein Krümmungsradius in einer zweiten Ebene, die die optische Achse (O) enthält und zu der ersten Ebene senkrecht ist.
  3. System nach Anspruch 1, bei dem das Target (T) sich an einem Punkt maximierter konzentrierter Flußdichte befindet, der im wesentlichen mit dem im wesentlichen fokussierten Bildpunkt zusammenfällt.
  4. System nach Anspruch 1, bei dem das Target an einem Punkt maximierter konzentrierter Flußdichte angeordnet ist, der gegenüber dem im wesentlichen fokussierten Bildpunkt versetzt ist.
  5. System nach Anspruch 1, mit einem zwischen der Quelle (s) und dem Reflektor (M1) und/oder dem Reflektor (M1) und dem Target (T) angeordneten optischen Element (C), daß ein optisches Element bildet, daß ausgewählt ist, aus der Gruppe, die besteht aus einer Korrekturoptik zum Verbessern der Fokussierung des Bildes auf das Target (T), einer mit einem optischen Präparat behandelten Korrekturoptik zur Kontrolle der spektralen Intensitätsverteilung der Quelle (s), einem optischen Dämpfungselement zur Dämpfung der auf das Target (T) auftreffenden elektomagnetischen Strahlung und einem optischen Filterelement zum Filtern der auf das Target (T) auftreffenden elektromagnetischen Strahlung.
  6. System nach Anspruch 1, mit einem zwischen der Quelle (s) und dem Reflektor (M1) und/oder dem Reflektor (M1) und dem Target (T) angeordneten mechanischen Element zum Dämpfen der auf das Target (T) auftreffenden elektomagnetischen Strahlung.
  7. System nach Anspruch 1, mit einem sekundären konkaven Retro-Reflektor (M2), der in Bezug auf den primären Reflektor (M1) allgemein hinter der Quelle (s) angeordnet ist, um elektromagnetische Strahlung von der Quelle (s) zurück und durch diese Quelle hindurch zu reflektieren, so daß ein Bild der Quelle (s) gebildet wird, das im wesentlichen mit der Quelle (s) zusammenfällt.
  8. System nach Anspruch 7, bei dem die Quelle (s) und der sekundäre konkave Retro-Reflektor (M2) zu einer einzigen Einheit kombiniert sind.
  9. System nach Anspruch 7, bei dem der sekundäre konkave Retro-Reflektor (M2) einen Reflektor aufweist, der ausgewählt ist aus der Gruppe, die besteht aus einem annähernd sphärischen Reflektor und einem im wesentlichen toroidförmigen Reflektor.
  10. System nach Anspruch 7, bei dem eine Reflexionsfläche des primären und/oder sekundären Reflektors (M1, M2) mit einem optischen Präparat behandelt ist, um die spektrale Intensitätsverteilung der Quelle zu kontrollieren.
  11. System nach Anspruch 1, bei dem der zweite Abstand im wesentlichen gleich dem ersten Abstand (y0) ist.
  12. System nach Anspruch 1, bei dem der zweite Abstand so von dem ersten Abstand (y0) verschieden ist, daß eine effektive optische Achse des Systems die Summe aus den ersten und zweiten Abständen halbiert und gegenüber der optischen Achse des Reflektors winkelversetzt ist.
  13. System nach einem der vorstehenden Ansprüche, bei dem das Target (T) ein optisches Fasertarget ist, dessen Sammel-Ende sich in der Nähe des Bildpunktes des Reflektors (M1) befindet.
  14. System nach Anspruch 13, bei dem die toroidförmige Reflexionsfläche in einer ersten Ebene, die die optische Achse des Reflektors, die Quelle und den Bildpunkt enthält, einen Krummungsradius (r1x) aufweist, der größer ist als der Krümmungsradius (r1y) in einer zweiten Ebene, die die optische Achse des Reflektors enthält und zu der ersten Ebene senkrecht ist.
  15. System nach Anspruch 13, bei dem die toroidförmige Reflexionsfläche in einer ersten Ebene, die die optische Achse des Reflektors und die Quelle enthält, einen Krümmungsradius (r1x) hat, der größer ist als der Krümmungsradius (r1y) in einer zweiten Ebene, die die optische Achse des Reflektors enthält und zu der ersten Ebene senkrecht ist, wo das Target (T) oberhalb oder unterhalb der ersten Ebene liegt.
  16. System nach Anspruch 7, bei dem die Lichtquelle (s) und der sekundäre, konkave Retro-Reflektor (M2) im wesentlichen in einem einzigen Gehäuse hergestellt und montiert sind.
  17. System nach Anspruch 13, bei dem das Sammel-Ende des optischen Fasertargets (T) unter einem Winkel im wesentlichen rechtwinklig zu einer Längsachse des optischen Fasertargets poliert ist.
  18. System nach Anspruch 13. bei dem das Sammel-Ende des optischen Fasertargets (T) unter einem Winkel im wesentlichen schräg zu einer zur Längsachse des optischen Fasertargets senkrechten Ebene poliert ist.
  19. System nach Anspruch 13, bei dem das optische Fasertarget mehrere gebündelte optische Fasern aufweist.
  20. System nach Anspruch 19, bei dem die mehreren optischen Fasern im wesentlichen identische optische Eigenschaften haben.
  21. System nach Anspruch 19, bei dem die mehreren optischen Fasern ausgewählt sind aus der Gruppe, die besteht aus optischen Fasern mit im wesentlichen unterschiedlichen Durchmessern, optischen Fasern mit im wesentlichen unterschiedlichen numerischen Aperaturn, optischen Fasern mit im wesentlichen unterschiedlichen Formen und optischen Fasern mit im wesentlichen unterschiedlichen Materialzusammensetzungen.
  22. System nach Anspruch 19, bei dem das Sammel-Ende wenigstens eine der optischen Fasern, die zu dem Target (T) gebündelt sind, unter einem Winkel im wesentlichen senkrecht zu einer Längsachse dieser optischen Faser poliert ist.
  23. System nach Anspruch 19, bei dem das Sammel-Ende wenigstens einer der optischen Fasern, die zu dem Target (T) gebündelt sind, unter einem Winkel im wesentlichen schräg in Bezug auf eine zu einer Längsachse dieser optischen Faser senkrechte Ebene poliert ist.
  24. System nach Anspruch 13, bei dem wenigstens eines der Enden des optischen Fasertargets mit einem optischen Präparat behandelt ist.
  25. System nach Anspruch 19, bei dem wenigstens eines der Enden wenigstens emcr der optischen Fasern, die zu dem Target gebündelt sind, mit einem optischen Präparat behandelt ist.
  26. System nach Anspruch 13, bei dem der primäre Reflektor eine numerische Aperatur hat, die optisch an wenigstens eine Charakteristik des faseroptischen Targets angepaßt ist.
  27. System nach Anspruch 13, bei dem die Lichtquelle, der primäre Reflektor und das faseroptische Target optisch angepaßt sind.
  28. System nach Anspruch 13, bei dem die Lichtquelle (s) ausgewählt ist aus der Gruppe, die besteht aus einer elektrischen Wechselstrom-Bogenlampe, einer elektrischen Gleichstrom-Bogenlampe, einer Gasentladungslampe, einer Glühfadenlampe, einer elektromagnetische Strahlung emittierenden optischen Faser und einem elektomagnetische Strahlung emittierenden Wellenleiter.
  29. System nach Anspruch 13, bei dem das Licht, das von der Lichtquelle emittiert wird, Licht umfaßt, daß ausgewählt ist aus der Gruppe, die besteht aus Licht mit kontinuierlichem Wellenzug, gepulstem Licht, kohärentem Licht, nichtkohärentem Licht, monochromatischem Licht, Breitbandlicht und Schmalbandlicht.
  30. System nach Anspruch 13, bei dem die Lichtquelle (s) und der primäre Reflektor (M1) im wesentlichen als eine Einheit in einem einzigen Gehäuse hergestellt und montiert sind und an das optische Fasertarget (T) gekoppelt sind.
  31. System nach Anspruch 13, bei dem das optische Fasertarget (T) außerhalb des Gehäuses montiert ist.
  32. System nach Anspruch 30, bei dem das optische Fasertarget (T) innerhalb des Gehäuses montiert ist.
  33. System nach Anspruch 13, mit einem zwischen der Quelle und dem Reflektor und/oder dem Reflektor und dem Target angeordneten mechanischen Element zum Dämpfen der auf das Target auftreffenden elektromagnetischen Strahlung.
  34. System nach Anspruch 13, bei dem die Lichtquelle, der primäre Reflektor und der sekundäre Reflektor im wesentlichen als eine Einheit in einem einzigen Gehäuse hergestellt und montiert sind und an die optische Faser gekoppelt sind.
  35. System nach Anspruch 34, bei dem das optische Fasertarget außerhalb des Gehäuses montiert ist.
  36. System nach Anspruch 34, bei dem das optische Fasertarget innerhalb des Gehäuses montiert ist.
  37. System nach Anspruch 13, bei dem die primären und sekundären Reflektoren als eine Einheit hergestellt sind, mit einer Reflexionsfläche, die optisch an die Lichtquelle und das faseroptische Target angepaßt ist.
  38. System nach Anspruch 34, bei dem die primären und sekundären Reflektoren einen einzigen Reflektor aufweisen, der optisch an die Lichtquelle und das faseroptische Target angepaßt ist.
  39. System nach Anspruch 1, gekennzeichnet durch einen zweiten primären Reflektor (M1') mit einer zweiten optischen Achse und einer zweiten im wesentlichen toroidförmigen Reflexionsfläche mit einem Krümmungsmittelpunkt,
    eine Lichtquelle (s), die in der Nähe eines Schnittpunktes der ersten und zweiten optischen Achsen angeordnet, jedoch um einen ersten Abstand von diesem Schnittpunkt versetzt ist, so daß das Licht dieser Quelle (s) an ersten und zweiten Bildpunkten fokussiert und konzentriert wird, die von den ersten und zweiten Achsen jeweils um einen zweiten Abstand versetzt sind, wobei der erste Bildpunkt der Lichtquelle (s) in Bezug auf die erste optische Achse des ersten primären Reflektors (M1) gegenüberliegt und der zweite Bildpunkt der Lichtquelle (s) in Bezug auf die zweite optische Achse des zweiten primären Reflektors (M1') gegenüberliegt,
    ein erstes optisches Fasertarget (T1), dessen Sammel-Ende sich in der Nähe des ersten Bildpunktes befindet und
    ein zweites optisches Fasertarget (T2), dessen Sammel-Ende sich in der Nähe des zweiten Bildpunktes befindet.
  40. System nach Anspruch 39, bei dem die ersten und zweiten primären Reflektoren (M1, M1') als ein einziger Reflektor hergestellt sind.
  41. System nach Anspruch 39, mit ersten und zweiten sekundären konkaven Retro-Reflektoren (M2, M2'), die in Bezug auf die ersten und zweiten primären Reflektoren (M1, M1') jeweils allgemein hinter der Quelle (s) angeordnet sind, um Licht von der Quelle (s) zurück und durch die Quelle hindurch zu reflektieren, so daß erste und zweite Bilder der Quelle gebildet werden, die im wesentlichen mit der Quelle zusammenfallen.
  42. System nach Anspruch 41, bei dem die Lichtquelle (s), die ersten und zweiten primären Reflektoren (M1, M1') und die ersten und zweiten sekundären Reflektoren (M2, M2') im wesentlichen als eine Einheit in einem einzigen Gehäuse hergestellt und montiert sind und an die ersten und zweiten optischen Fasertargets (T1, T2) gekoppelt sind.
EP93918480A 1992-08-03 1993-07-29 Optisches system mit einem toroidförmigen konkaven reflektor zum konzentrieren und sammeln von licht. Expired - Lifetime EP0653039B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US924198 1986-10-27
US07/924,198 US5430634A (en) 1992-08-03 1992-08-03 Concentrating and collecting optical system using concave toroidal reflectors
PCT/US1993/007124 WO1994003759A2 (en) 1992-08-03 1993-07-29 Toroidal reflectors for optical system

Publications (3)

Publication Number Publication Date
EP0653039A1 EP0653039A1 (de) 1995-05-17
EP0653039A4 EP0653039A4 (de) 1995-08-30
EP0653039B1 true EP0653039B1 (de) 1998-05-20

Family

ID=25449867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93918480A Expired - Lifetime EP0653039B1 (de) 1992-08-03 1993-07-29 Optisches system mit einem toroidförmigen konkaven reflektor zum konzentrieren und sammeln von licht.

Country Status (12)

Country Link
US (2) US5430634A (de)
EP (1) EP0653039B1 (de)
JP (1) JP3153890B2 (de)
CN (1) CN1048321C (de)
AT (1) ATE166443T1 (de)
AU (1) AU4791193A (de)
CA (1) CA2141684C (de)
DE (1) DE69318718T2 (de)
ES (1) ES2116463T3 (de)
MX (1) MX9304644A (de)
SG (1) SG43336A1 (de)
WO (1) WO1994003759A2 (de)

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5430634A (en) * 1992-08-03 1995-07-04 Cogent Light Technologies, Inc. Concentrating and collecting optical system using concave toroidal reflectors
US6186648B1 (en) * 1992-08-03 2001-02-13 Cogent Light Technologies, Inc. Concentrating and collecting optical system using concave toroidal reflectors
JP3496890B2 (ja) 1993-10-05 2004-02-16 キヤノン株式会社 表示装置
US7262919B1 (en) 1994-06-13 2007-08-28 Canon Kabushiki Kaisha Head-up display device with curved optical surface having total reflection
US5625738A (en) * 1994-06-28 1997-04-29 Corning Incorporated Apparatus for uniformly illuminating a light valve
IL112087A (en) * 1994-12-20 1999-08-17 Laser Ind Ltd Side-emitting optical fibers for lasers
US5892867A (en) * 1995-01-17 1999-04-06 Remote Source Lighting International, Inc. Spherical multiport illuminator optic design for light guides
IL113674A (en) * 1995-05-09 1998-06-15 Laser Ind Ltd Side-emitting optical fibers for lasers with orientation markings
US5826963A (en) * 1996-02-27 1998-10-27 General Electric Company Low angle, dual port light coupling arrangement
US5879159A (en) * 1996-12-24 1999-03-09 Ion Laser Technology, Inc. Portable high power arc lamp system and applications therefor
US5880831A (en) * 1997-12-09 1999-03-09 N & K Technology, Inc. Reflectance spectrophotometric apparatus with optical relay
JP2000098293A (ja) 1998-06-19 2000-04-07 Canon Inc 画像観察装置
US6428198B1 (en) 1998-07-07 2002-08-06 Alliedsignal Inc. Display system having a light source separate from a display device
US6573978B1 (en) * 1999-01-26 2003-06-03 Mcguire, Jr. James P. EUV condenser with non-imaging optics
DE60032903T2 (de) * 1999-07-01 2007-06-14 Wavien, Inc., Santa Clarita Kondensierendes und sammelndes optisches system, welches parabolreflektoren oder ein korrespondierendes elliptisch-hyperboloid-förmiges reflektorpaar verwendet
US6672740B1 (en) 1999-07-01 2004-01-06 Cogent Light Technologies, Inc. Condensing and collecting optical system using parabolic reflectors or a corresponding ellipsoid/hyperboloid pair of reflectors
US6231199B1 (en) 1999-07-01 2001-05-15 Cogent Light Technologies, Inc. Collecting and condensing optical system using cascaded parabolic reflectors
EP1798579B1 (de) * 1999-07-01 2013-04-10 Wavien, Inc. Kondensierendes und sammelndes optisches System,welches Parabolreflektoren oder ein korrespondierendes elliptisch-hyperboloid-förmiges Reflektorpaar verwendet
US6796677B1 (en) 1999-07-23 2004-09-28 Everbrite, Inc. High intensity lamp
US6595673B1 (en) * 1999-12-20 2003-07-22 Cogent Light Technologies, Inc. Coupling of high intensity light into low melting point fiber optics using polygonal homogenizers
US6318885B1 (en) * 2000-03-09 2001-11-20 Cogent Light Technologies, Inc. Method and apparatus for coupling light and producing magnified images using an asymmetrical ellipsoid reflective surface
US6312144B1 (en) 2000-03-21 2001-11-06 Cogent Light Technologies, Inc. Optical system having retro-reflectors
US6490095B2 (en) 2000-03-23 2002-12-03 Canon Kabushiki Kaisha Image display apparatus
US6634759B1 (en) * 2000-03-27 2003-10-21 Cogent Light Technologies, Inc. Coupling of light from a light source to a target using dual ellipsoidal reflectors
US7513630B2 (en) * 2000-03-27 2009-04-07 Wavien, Inc. Compact dual ellipsoidal reflector (DER) system having two molded ellipsoidal modules such that a radiation receiving module reflects a portion of rays to an opening in the other module
US7631989B2 (en) * 2000-03-27 2009-12-15 Wavien, Inc. Dual paraboloid reflector and dual ellipsoid reflector systems with optimized magnification
JP2001311904A (ja) 2000-04-28 2001-11-09 Canon Inc 画像表示装置および画像表示システム
JP4194218B2 (ja) 2000-04-28 2008-12-10 キヤノン株式会社 画像表示装置および画像表示システム
JP4387554B2 (ja) 2000-04-28 2009-12-16 キヤノン株式会社 画像表示装置および画像表示システム
CA2422705A1 (en) * 2000-09-20 2002-03-28 Wavien, Inc. Light condensing and collecting systems using lensed light pipes
US6616304B2 (en) 2000-10-04 2003-09-09 Cogent Light Technologies, Inc. Temperature control for arc lamps
US6565235B2 (en) 2000-10-26 2003-05-20 Cogent Light Technologies Inc. Folding an arc into itself to increase the brightness of an arc lamp
US6558410B1 (en) 2000-11-28 2003-05-06 Remotelight, Inc. Cardiac deblocking device and method
US6524529B1 (en) 2000-11-28 2003-02-25 Horton, Iii Isaac B. Appliances having UV disinfection device and method
AU2002240203A1 (en) 2001-02-05 2002-08-19 Wavien, Inc. An illumination engine for a projection display using a tapered light pipe
CA2437059A1 (en) * 2001-02-21 2002-09-26 Wavien, Inc. Illumination system using filament lamps
US6856727B2 (en) * 2001-03-02 2005-02-15 Wavien, Inc. Coupling of light from a non-circular light source
AU2002344305A1 (en) * 2001-05-30 2002-12-09 James M. Essig Inflatable multi-function parabolic reflector apparatus and methods of manufacture
US7382332B2 (en) * 2001-05-30 2008-06-03 Essig Jr John Raymond Modular inflatable multifunction field-deployable apparatus and methods of manufacture
US6926435B2 (en) * 2001-08-23 2005-08-09 Wavien, Inc. Led illumination engine using a reflector
US20030086817A1 (en) * 2001-11-06 2003-05-08 Horton Isaac B. Blood purification system
US7012756B2 (en) * 2001-11-14 2006-03-14 Canon Kabushiki Kaisha Display optical system, image display apparatus, image taking optical system, and image taking apparatus
US7019909B2 (en) * 2001-11-14 2006-03-28 Canon Kabushiki Kaisha Optical system, image display apparatus, and image taking apparatus
JP2003303751A (ja) * 2002-04-05 2003-10-24 Canon Inc 投影光学系、該投影光学系を有する露光装置及び方法
US20100313878A1 (en) * 2002-05-30 2010-12-16 John Essig Systems and methods for harnessing resources
TW534328U (en) * 2002-10-29 2003-05-21 Toppoly Optoelectronics Corp Assembly structure for flat panel display
DE10310602A1 (de) * 2003-03-11 2004-09-23 Olympus Biosystems Gmbh Zwischen wenigstens zwei optischen Systemen abbildende optische Abbildungsanordnung mit wenigstens einem torischen Spiegel
US7400805B2 (en) * 2003-06-10 2008-07-15 Abu-Ageel Nayef M Compact light collection system and method
US7360936B2 (en) * 2003-06-10 2008-04-22 Abu-Ageel Nayef M Method and system of LED light extraction using optical elements
US6961489B2 (en) * 2003-06-30 2005-11-01 Finisar Corporation High speed optical system
US7149383B2 (en) 2003-06-30 2006-12-12 Finisar Corporation Optical system with reduced back reflection
CA2608368A1 (en) 2005-06-30 2007-01-11 Wavien, Inc. Dual paraboloid reflector and dual ellipsoid reflector systems with optimized magnification
DE102005032934A1 (de) 2005-07-12 2007-01-25 Philipps-Universität Marburg Erfindung betreffend Reflektorsysteme
WO2008027692A2 (en) * 2006-08-02 2008-03-06 Abu-Ageel Nayef M Led-based illumination system
US20090050905A1 (en) * 2007-08-20 2009-02-26 Abu-Ageel Nayef M Highly Efficient Light-Emitting Diode
WO2010090862A2 (en) * 2009-01-21 2010-08-12 Abu-Ageel Nayef M Illumination system utilizing wavelength conversion materials and light recycling
DE102010032405B4 (de) * 2010-07-27 2013-06-27 Zett Optics Gmbh Kaltlichtquelle
EP2773591A4 (de) * 2011-11-02 2015-08-19 Univ Syddansk Ringförmige behandlungsvorrichtung zur desinfektion eines fluids wie z. b. luft oder wasser
CN102809822B (zh) * 2012-08-22 2015-03-25 温州泛波激光有限公司 一种激光二极管阵列的光束耦合聚焦装置
EP3084491B1 (de) * 2013-12-19 2019-09-25 3M Innovative Properties Company Multimodaler optischer verbinder
CN107505307B (zh) * 2017-08-09 2020-11-27 成都艾立本科技有限公司 全包围式椭圆球面镜光路激光诱导击穿光谱仪系统

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2628533A (en) * 1951-10-17 1953-02-17 Robert A Oetjen Image forming optical reflecting and converging mirror device
US2825260A (en) * 1954-11-19 1958-03-04 O'brien Brian Optical image forming devices
US3122330A (en) * 1961-12-11 1964-02-25 Ernest J Trentini Arc reflectors
DE1283563B (de) * 1966-01-17 1968-11-21 Medizinische Geraetefabrik Mgf Lichtspeiseeinrichtung fuer Lichtleiter
US3476930A (en) * 1967-03-22 1969-11-04 Sperry Rand Corp Optical reflectors
US3712979A (en) * 1972-02-03 1973-01-23 Lilly Co Eli Illumination of convex surfaces
US3798441A (en) * 1972-10-16 1974-03-19 Illumination Ind Inc Illuminator for exposing color television tubes during the manufacturing process thereof and the like
US4151582A (en) * 1974-12-26 1979-04-24 Izon Corporation Point array sheet lighting apparatus
US4241390A (en) * 1978-02-06 1980-12-23 The Perkin-Elmer Corporation System for illuminating an annular field
FR2441860A1 (fr) * 1978-11-14 1980-06-13 Thomson Csf Epissure entre fibres optiques
US4396285A (en) * 1980-08-25 1983-08-02 Coherent, Inc. Laser system and its method of use
GB2159940A (en) * 1984-06-01 1985-12-11 Stc Plc Remote optical sensors
JPS61102618A (ja) * 1984-10-23 1986-05-21 ヴィルト　ライツ　アクチエンゲゼルシャフト 暗視野照明装置
SU1254405A1 (ru) * 1985-01-04 1986-08-30 Предприятие П/Я Р-6681 Зеркальный объектив
US4706168A (en) * 1985-11-15 1987-11-10 View Engineering, Inc. Systems and methods for illuminating objects for vision systems
US4757431A (en) * 1986-07-01 1988-07-12 Laser Media Off-axis application of concave spherical reflectors as condensing and collecting optics
EP0308604A1 (de) * 1987-09-25 1989-03-29 Siemens Aktiengesellschaft Koppeloptik zum Einkoppeln des von einem Halbleiterlaser ausgesandten Laserlichts in einen optischen Wellenleiter
US4897771A (en) * 1987-11-24 1990-01-30 Lumitex, Inc. Reflector and light system
DE3830906A1 (de) * 1988-09-10 1990-03-15 Draegerwerk Ag Spiegelanordnung fuer einen strahlengang in einer vielfach-reflexionsmesszelle
US4921338A (en) * 1989-05-09 1990-05-01 Macken John A Corrective optics for rectangular laser beams
US4947305A (en) * 1989-05-19 1990-08-07 Vector Technical Group, Inc. Lamp reflector
ATE113704T1 (de) * 1989-06-09 1994-11-15 Zelisko Josef Elektro Masch Lampenanordnung, insbesondere für eine signaleinrichtung.
US5058985A (en) * 1990-07-23 1991-10-22 General Electric Company Coupling means between a light source and a bundle of optical fibers and method of making such coupling means
US5042892A (en) * 1990-08-03 1991-08-27 David Chiu Fiber optic light panel
US5097396A (en) * 1990-09-25 1992-03-17 Poly-Optical Products, Inc. Fiber optic backlighting panel
US5117312A (en) 1991-01-04 1992-05-26 Fusion Systems Corporation Apparatus including concave reflectors and a line of optical fibers
US5430634A (en) * 1992-08-03 1995-07-04 Cogent Light Technologies, Inc. Concentrating and collecting optical system using concave toroidal reflectors

Also Published As

Publication number Publication date
CA2141684A1 (en) 1994-02-17
DE69318718T2 (de) 1998-12-24
ATE166443T1 (de) 1998-06-15
ES2116463T3 (es) 1998-07-16
WO1994003759A3 (en) 1994-04-28
US5836667A (en) 1998-11-17
MX9304644A (es) 1994-03-31
JPH08501408A (ja) 1996-02-13
EP0653039A4 (de) 1995-08-30
SG43336A1 (en) 1997-10-17
CA2141684C (en) 2004-09-28
US5430634A (en) 1995-07-04
WO1994003759A2 (en) 1994-02-17
EP0653039A1 (de) 1995-05-17
DE69318718D1 (de) 1998-06-25
CN1086906A (zh) 1994-05-18
CN1048321C (zh) 2000-01-12
AU4791193A (en) 1994-03-03
JP3153890B2 (ja) 2001-04-09

Similar Documents

Publication Publication Date Title
US5836667A (en) Concentrating and collecting optical system using concave toroidal reflectors
CA2168338C (en) Condensing and collecting optical system using an ellipsoidal reflector
CA2402560C (en) Coupling of light from a light source to a target using dual ellipsoidal reflectors
US4757431A (en) Off-axis application of concave spherical reflectors as condensing and collecting optics
CA2181992C (en) Condensing and collecting optical system with axially displaced concave reflector
KR100809915B1 (ko) 포물면 반사기 또는 대응하는 타원면/쌍곡면 쌍의반사기를 사용하는 집속 및 수집용 광학 시스템
US6186648B1 (en) Concentrating and collecting optical system using concave toroidal reflectors
MXPA01011058A (es) Acoplamiento mejorado de luz desde una lampara de arco electrico pequeno hacia un objetivo mayor.
KR101324807B1 (ko) 최적화된 배율을 갖는 이중 포물면 반사기 및 이중 타원면반사기 시스템
IL108519A (en) Optical system for concentrating and collecting electromagnetic radiation
EP1914573A2 (de) Kopplung von Licht aus einer Lichtquelle mit einem Ziel unter Verwendung dualer ellipsenförmiger Reflektoren
MXPA01003854A (en) Concentrating and collecting optical system using concave toroidal reflectors
WO2007005624A2 (en) Dual paraboloid reflector and dual ellipsoid reflector systems with optimized magnification
HK1120853B (en) Dual paraboloid reflector and dual ellipsoid reflector systems with optimized magnification

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

RIN1 Information on inventor provided before grant (corrected)

Inventor name: THOMAS, MICHAEL

Inventor name: PICCIONI, ROBERT

Inventor name: FISCHER, ROBERT

Inventor name: BRENNER, DOUGLAS, C/O COGENT LIGHT TECHN., INC.

Inventor name: STROBL, KARLHEINZ

Inventor name: BAKER, GLENN

A4 Supplementary search report drawn up and despatched
AK Designated contracting states

Kind code of ref document: A4

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19950220

17Q First examination report despatched

Effective date: 19961105

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980520

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980520

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980520

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980520

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980520

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980520

REF Corresponds to:

Ref document number: 166443

Country of ref document: AT

Date of ref document: 19980615

Kind code of ref document: T

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69318718

Country of ref document: DE

Date of ref document: 19980625

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2116463

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 19980722

Year of fee payment: 6

Ref country code: DK

Payment date: 19980722

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: MC

Payment date: 19980723

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19980724

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19980728

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19980813

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980820

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980820

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19980902

Year of fee payment: 6

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990729

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000131

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20020703

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20020807

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030730

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030730

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030730

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070730

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20070710

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080814

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080806

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080729

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080731

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100202